Parallel or Perpendicular?
Are the lines parallel, perpendicular or just intersecting? Circle the answer.
Fresh sheet anytime. Tap New sheet or reload for a different one. Tap + for up to 10.
This is sheet #147724601.
How to do it
- Look at whether the lines cross.
- If they cross, look for a square corner.
- Circle the answer.
Teaching tip
Use the corner of a card to check for a right angle. This sheet is aligned with Common Core 4.G.A.1.
About this worksheet
Pairs of lines to sort as parallel, perpendicular or intersecting, turned in different directions.
What kids practice
Fourth graders learn the names of the building blocks of geometry: points, lines, line segments, rays and angles. They find parallel lines, which never meet, and perpendicular lines, which meet at a right angle. They sort shapes by whether they have parallel sides or right angles, and find lines of symmetry, where a shape folds into two matching halves.
Watch for
- Mixing up a ray and a segment, or a line and a segment.
- Calling any crossing lines perpendicular, even without a right angle.
- Drawing a diagonal line of symmetry on a rectangle that is not a square.
- Missing some lines of symmetry on shapes with many, like a square.
It's free to print, with Fewer, Standard or More on the page and an answer key. See the full lines and symmetry guide for 4th grade.
More sheets in this set
- See it all
1. How to Name Points, Lines, Segments and RaysPoints, lines, segments, rays and angles with their names, plus parallel, perpendicular and intersecting lines. 
2. Points, Lines, Segments and RaysFigures to name as a point, line, segment, ray or angle. Fewer uses lines, segments and rays only.
4. Sort the ShapesShapes to check for parallel sides and right angles, including triangles, quadrilaterals and more. Standard and More turn the shapes.- See it all
5. How to Find Lines of SymmetryA heart folded on its line of symmetry, and how many lines a square, rectangle, triangles and a parallelogram have. 
6. Draw Lines of SymmetryShapes to draw every line of symmetry on and count them. Some have none.
7. Finish the Symmetric PictureHalf pictures on dot paper to finish across a line of symmetry. More has more pictures and some sideways lines.